UMTRI 2008-08 TRUCKS INVOLVED IN FATAL ACCIDENTS FACTBOOK 2005 Anne Matteson Linda Jarossi John Woodrooffe February 2008 Center for National Truck and Bus Statistics The University of Michigan Transportation Research Institute Ann Arbor, Michigan 48109-2150
The research reported herein was conducted under the general research funds provided by the Federal Motor Carrier Safety Administration. The opinions, findings, and conclusions expressed in this publication are those of the authors and not necessarily those of the U.S. Department of Transportation or the Federal Motor Carrier Safety Administration. ii
1. Report No. UMTRI-2008-08 4. Title and Subtitle Trucks Involved in Fatal Accidents Factbook 2005 2. Government Accession No. 3. Recipient's Catalog No. 5. Report Date February 2008 6. Performing Organization Code Technical Report Documentation Page 7. Authors Anne Matteson, Linda Jarossi, John Woodrooffe 9. Performing Organization Name and Address Transportation Research Institute 2901 Baxter Road University of Michigan Ann Arbor, Michigan 48109-2150 8. Performing Organization Report No. UMTRI-2008-08 10. Work Unit No. 052703 11. Contract or Grant No. DTMC75-06-H-00003 12. Sponsoring Agency Name and Address 13. Type of Report and Period Covered Special report 14. Sponsoring Agency Code 15. Supplementary Notes Funds provided by: Federal Motor Carrier Safety Adminstration Washington DC 20590 16. Abstract This document presents aggregate statistics on trucks involved in traffic accidents in 2005. The statistics are derived from the Trucks Involved in Fatal Accidents (TIFA) file, compiled by the University of Michigan Transportation Research Institute. The TIFA database provides coverage of all medium and heavy trucks recorded in the Fatality Analysis Reporting System (FARS) file. TIFA combines vehicle, accident, and occupant records from FARS with information about the physical configuration and operating authority of the truck from the TIFA survey. 17. Key Words Trucks, medium trucks, heavy trucks, accident statistics, fatal accident data 19. Security Classification (of this report) Unclassified 18. Distribution Statement Unlimited 20. Security Classification (of this page) Unclassified Reproduction of completed page authorized 21. No. of Pages 104 22. Price iii
SI* (MODERN METRIC) CONVERSION FACTORS APPROXIMATE CONVERSIONS TO SI UNITS APPROXIMATE CONVERSIONS FROM SI UNITS Symbol When You Know Multiply By To Find Symbol Symbol When You Know Multiply By To Find Symbol LENGTH LENGTH inches 25.4 millimeters mm mm millimeters 0.039 inches in in ft feet 0.305 meters m m meters 3.28 feet ft yd yards 0.914 meters m m meters 1.09 yards yd mi miles 1.61 kilometers km km kilometers 0.621 miles mi AREA AREA in 2 square inches 645.2 square millimeters mm 2 mm 2 square millimeters 0.0016 square inches in 2 ft 2 square feet 0.093 square meters m 2 m 2 square meters 10.764 square feet ft 2 yd 2 square yards 0.836 square meters m 2 m 2 square meters 1.195 square yards yd 2 ac acres 0.405 hectares ha ha hectares 2.47 acres ac mi 2 square miles 2.59 square kilometers km 2 km 2 square kilometers 0.386 square miles mi 2 VOLUME VOLUME fl oz fluid ounces 29.57 milliliters ml rnl milliliters 0.034 fluid ounces fl oz gal gallons 3.785 liters L L liters 0.264 gallons gal ft 3 cubic feet 0.028 cubic meters m 3 m 3 cubic meters 35.71 cubic feet ft 3 yd 3 cubic yards 0.765 cubic meters m 3 m 3 cubic meters 1.307 cubic yards yd 3 NOTE: Volumes greater than 1000 L shall be shown in m 3. MASS MASS oz ounces 28.35 grams g g grams 0.035 ounces oz lb pounds 0.454 kilograms kg kg kilograms 2.202 pounds lb T short tons (2000 lb) 0.907 megagrams (or "metric ton") Mg (or "t") Mg (or t ) megagrams (or "metric ton") 1.103 short tons (2000 lb) T F Fahrenheit temperature TEMPERATURE (exact) 5(F-32)/9 or (F-32)/1.8 Celcius temperature C C Celcius temperature TEMPERATURE (exact) 1.8C + 32 Fahrenheit temperature ILLUMINATION ILLUMINATION fc foot-candles 10.76 lux lx lx lux 0.0929 foot-candles fc fl foot-lamberts 3.426 candela/m 2 cd/m 2 cd/m 2 candela/m 2 0.2919 foot-lamberts fl FORCE and PRESSURE or STRESS FORCE and PRESSURE or STRESS lbf poundforce 4.45 newtons N N newtons 0.225 poundforce lbf Ibf/in 2 poundforce per 6.89 kilopascals kpa kpa kilopascals 0.145 poundforce per Ibf/in 2 square inch square inch * SI is the symbol for the lnternational System of Units. Appropriate (Revised September 1993) rounding should be made to comply with Section 4 of ASTM E380. F iv
Acknowledgments The data documented in this report are the product of the dedicated efforts of many people. The project originated under the direction of Ken Campbell. Daniel Blower directs the current project. Leslie Pettis, Daniel Hershberger, Robert Allen, Robert Pichler, and many interviewers made the accuracy of the data a matter of personal pride. The project would not have been possible without the willing cooperation of thousands of truck owners, operators, and police officers across the country. The TIFA Survey is conducted by the Center for National Truck and Bus Statistics at the University of Michigan Transportation Research Institute with support from the Federal Motor Carrier Safety Administration. The National Highway Traffic Safety Administration s National Center for Statistics and Analysis and FARS analysts in the states provided assistance in acquiring police reports from the respective states. We are sincerely grateful for their efforts. v
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Table of contents Figures... ix Tables... xi Introduction... 1 Report overview...1 Trends, 2001-2005... 3 Annual fatal involvements...5 Annual fatalities...11 Accident conditions... 13 Geographic distributions...15 Temporal distributions...18 Environmental distributions...20 Roadway distributions...22 Accident description...25 Vehicle... 29 Driver... 41 Straight trucks... 57 Configuration...59 Vehicle use...62 Accident description...64 Tractors... 67 Configuration...69 Vehicle use...75 Accident description...77 Glossary and abbreviations...81 Table of Abbreviations...86 vii
Index... 86 viii
Figures Figure 1-1 Fatal Truck Involvements by Year and Truck Configuration...5 Figure 1-2 Fatalities in Truck Involvements by Year and Person Type...11 Figure 2-1: Fatal Truck Involvements by State...15 Figure 2-2: Fatal Truck Involvements by State Straight Trucks Only...15 Figure 2-3: Fatal Truck Involvements by State Tractor-Semitrailers Only...16 Figure 2-4: Fatal Truck Involvements by State Doubles Only...16 Figure 3-1 Fatal Truck Involvements by Cab Style and Year...34 Figure 3-2 Fatal Truck Involvements by Power Unit Type and Model Year...34 Figure 3-3 Fatal Truck Involvements by Rollover Status and Year...39 Figure 4-1 Fatal Truck Involvements by Driver Compensation and Truck Configuration...54 Figure 4-2 Fatal Truck Involvements by Driver Compensation and Operating Authority...55 ix
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Tables Trends, 2001-2005 Table 1-1 Fatal Truck Involvements by Year and Truck Configuration...5 Table 1-2 Fatal Truck Involvements by Year and All Truck Configurations...6 Table 1-3: Fatal Truck Involvements by Year and State...7 Table 1-4: Fatal Truck Involvements by Year and State Straight Trucks Only...8 Table 1-5: Fatal Truck Involvements by Year and State Tractor-Semitrailers Only...9 Table 1-6: Fatal Truck Involvements by Year and State Doubles Only...10 Table 1-7 Fatalities in Truck Involvements by Year and Person Type...11 Accident conditions Table 2-1: Fatal Truck Involvements by State and Truck Configuration...17 Table 2-2 Fatal Truck Involvements by Month and Truck Configuration...18 Table 2-3 Fatal Truck Involvements by Day of Week and Truck Configuration...18 Table 2-4 Fatal Truck Involvements by Day Type and Truck Configuration...18 Table 2-5 Fatal Truck Involvements by Time of Accident and Truck Configuration...19 Table 2-6 Fatal Truck Involvements by Time of Accident and Day Type...20 Table 2-7 Fatal Truck Involvements by Land Use and Truck Configuration...20 Table 2-8 Fatal Truck Involvements by Light Condition and Truck Configuration...21 Table 2-9 Fatal Truck Involvements by Roadway Surface Condition and Truck Configuration..21 Table 2-10 Fatal Truck Involvements by Weather Condition and Truck Configuration...21 Table 2-11 Fatal Truck Involvements by Roadway Function Class and Truck Configuration...22 Table 2-12 Fatal Truck Involvements by Route Signing and Truck Configuration...22 Table 2-13 Fatal Truck Involvements by Relation to Junction and Truck Configuration...23 xi
Table 2-14 Fatal Truck Involvements by Number of Travel Lanes and Truck Configuration...23 Table 2-15 Fatal Truck Involvements by Trafficway Flow and Truck Configuration...24 Table 2-16 Fatal Truck Involvements by Speed Limit and Truck Configuration...24 Table 2-17 Fatal Truck Involvements by Accident Type and Truck Configuration...25 Table 2-18 Fatal Truck Involvements by First Harmful Event and Truck Configuration...26 Table 2-19 Fatal Truck Involvements by Vehicle Role in Accident and Truck Configuration...27 Table 2-20 Fatal Truck Involvements by Manner of Collision and Truck Configuration...27 Table 2-21 Fatal Truck Involvements by Rollover Status and Truck Configuration...27 Table 2-22 Fatal Truck Involvements by Jackknife Status and Truck Configuration...28 Table 2-23 Fatal Truck Involvements by Fire Occurrence and Truck Configuration...28 Table 2-24 Fatal Truck Involvements by Cargo Spillage and Truck Configuration...28 Vehicle Table 3-1 Fatal Truck Involvements by Truck Configuration...31 Table 3-2 Fatal Truck Involvements by Cargo Body Style and Truck Configuration...32 Table 3-3 Fatal Truck Involvements by Type of Cargo and Truck Configuration...32 Table 3-4 Fatal Truck Involvements by Cab Style and Truck Configuration...33 Table 3-5 Fatal Truck Involvements by Cab Style and Power Unit Model Year...33 Table 3-6 Fatal Truck Involvements by Power Unit Model Year and Truck Configuration...35 Table 3-7 Fatal Truck Involvements by Gross Vehicle Weight Rating and Truck Configuration.36 Table 3-8 Fatal Truck Involvements by Gross Combination Weight Rating and Truck Configuration...36 Table 3-9 Fatal Truck Involvements by Carrier Type and Truck Configuration...36 Table 3-10 Fatal Truck Involvements by Trip Type and Truck Configuration...37 Table 3-11 Fatal Truck Involvements by Presence of Advanced Safety and Security Systems and Truck Configuration...37 xii
Table 3-12 Fatal Truck Involvements by Presence of Hazardous Materials Placard and Truck Configuration...37 Table 3-13 Fatal Truck Involvements by Presence of Hazardous Materials Class and Truck Configuration...38 Table 3-14 Fatal Truck Involvements by Rollover Status and Cargo Body Style Straight Trucks Only...38 Table 3-15 Fatal Truck Involvements by Rollover Status and Cargo Body Style Straight/ 1 Trailer...38 Table 3-16 Fatal Truck Involvements by Rollover Status Bobtails...38 Table 3-17 Fatal Truck Involvements by Rollover Status and Cargo Body Style Tractor/ 1 Trailer...39 Table 3-18 Fatal Truck Involvements by Rollover Status and Cargo Body Style Tractor/ 2 Trailers...39 Driver Table 4-1 Fatal Truck Involvements by Driver Drinking Status and Truck Configuration...43 Table 4-2 Fatal Truck Involvements by Driver Drug Use and Truck Configuration...43 Table 4-3 Fatal Truck Involvements by Driver Age and Truck Configuration...43 Table 4-4 Fatal Truck Involvements by Driver Sex and Truck Configuration...44 Table 4-5 Fatal Truck Involvements by Driver Restraint Use and Truck Configuration...44 Table 4-6 Fatal Truck Involvements by Driver Injury Severity and Truck Configuration...44 Table 4-7 Fatal Truck Involvements by Driver Injury Severity and Rollover, Fire, Ejection Status...45 Table 4-8 Fatal Truck Involvements by Driver Extrication and Truck Configuration...45 Table 4-9 Fatal Truck Involvements by Reported Hours Driven and Truck Configuration...45 Table 4-10 Fatal Truck Involvements by Reported Hours Driven and Trip Type...46 Table 4-11 Fatal Truck Involvements by Reported Hours Driven and Operating Authority...46 Table 4-12 Fatal Truck Involvements by Reported Hours Driven and Area of Operation...47 Table 4-13 Fatal Truck Involvements by Reported Hours Driven and Area of Operation Straight Trucks Only...47 xiii
Table 4-14 Fatal Truck Involvements by Reported Hours Driven and Area of Operation Tractors Only...48 Table 4-15 Fatal Truck Involvements by Number of Previous Accidents and Truck Configuration...48 Table 4-16 Fatal Truck Involvements by Number of Previous Suspensions and Truck Configuration...49 Table 4-17 Fatal Truck Involvements by Number of Previous Speeding Convictions and Truck Configuration...49 Table 4-18 Fatal Truck Involvements by Previous Other Moving Convictions and Truck Configuration...50 Table 4-19 Fatal Truck Involvements by License Class Compliance and Truck Configuration.50 Table 4-20 Fatal Truck Involvements by CDL License Status and Truck Configuration...50 Table 4-21 Fatal Truck Involvements by License Endorsements and Truck Configuration...51 Table 4-22 Fatal Truck Involvements by Driver-Related Factors and Truck Configuration...52 Table 4-23 Fatal Truck Involvements by Driver Compensation and Truck Configuration...54 Table 4-24 Fatal Truck Involvements by Driver Compensation and Operating Authority...54 Straight trucks Table 5-1 Fatal Truck Involvements by Truck Configuration...59 Table 5-2 Fatal Truck Involvements by Cargo Body Style Straight Trucks...59 Table 5-3 Fatal Truck Involvements by Gross Vehicle Weight Rating and Cargo Body Style Straight Trucks...60 Table 5-4 Fatal Truck Involvements by Cargo Type and Cargo Body Style Straight Trucks...60 Table 5-5 Fatal Truck Involvements by Axle Combinations Straight Truck Configurations...62 Table 5-6 Fatal Truck Involvements by Carrier Type and Cargo Body Style Straight Trucks..62 Table 5-7 Fatal Truck Involvements by Trip Type and Cargo Body Style Straight Trucks...63 Table 5-8 Fatal Truck Involvements by Route Signing and Cargo Body Style Straight Trucks63 Table 5-9 Fatal Truck Involvements by Land Use and Cargo Body Style Straight Trucks...63 xiv
Table 5-10 Fatal Truck Involvements by Light Condition and Cargo Body Style Straight Trucks...64 Table 5-11 Fatal Truck Involvements by Accident Type and Driver Injury Severity Straight Trucks...64 Table 5-12 Fatal Truck Involvements by Manner of Collision and Cargo Body Style Straight Trucks...65 Table 5-13 Fatal Truck Involvements by Driver Injury Severity and Cargo Body Style Straight Trucks...65 Table 5-14 Fatal Truck Involvements by Driver Injury Severity and Rollover, Fire, Ejection Status Straight Trucks...65 Tractors Table 6-1 Fatal Truck Involvements by Tractor Configuration...69 Table 6-2 Fatal Truck Involvements by Cargo Body Style and Truck Configuration Tractor Combinations...70 Table 6-3 Fatal Truck Involvements by Cargo Type and Truck Configuration Tractor Combinations...71 Table 6-4 Fatal Truck Involvements by Cargo Type and Cargo Body Style Tractor Combinations...72 Table 6-5 Fatal Truck Involvements by Cargo Type and Cargo Body Style Groups Tractor Combinations...73 Table 6-6 Fatal Truck Involvements by Gross Vehicle Weight Rating and Truck Configuration Tractor Combinations...73 Table 6-7 Fatal Truck Involvements by Gross Vehicle Weight Rating and Cargo Body Style Tractor Combinations...74 Table 6-8A Fatal Truck Involvements by Axle Combinations Tractors, No Trailers...74 Table 6-8B Fatal Truck Involvements by Axle Combinations Tractor-Semitrailers...74 Table 6-8C Fatal Truck Involvements by Axle Combinations Doubles...75 Table 6-9 Fatal Truck Involvements by Carrier Type and Truck Configuration Tractor Combinations...75 Table 6-10 Fatal Truck Involvements by Carrier Type and Cargo Body Style Tractor Combinations...76 xv
Table 6-11 Fatal Truck Involvements by Trip Type and Cargo Body Style Tractor Combinations...76 Table 6-12 Fatal Truck Involvements by Route Signing and Cargo Body Style Tractor Combinations...76 Table 6-13 Fatal Truck Involvements by Land Use and Cargo Body Style Tractor Combinations...77 Table 6-14 Fatal Truck Involvements by Light Condition and Cargo Body Style Tractor Combinations...77 Table 6-15 Fatal Truck Involvements by Manner of Collision and Cargo Body Style Tractor Combinations...77 Table 6-16 Fatal Truck Involvements by Accident Type and Driver Injury Severity Tractor Combinations...78 Table 6-17 Fatal Truck Involvements by Driver Injury Severity and Cargo Body Style Tractor Combinations...78 Table 6-18 Fatal Truck Involvements by Driver Injury Severity and Rollover, Fire, Ejection Status Tractor Combinations...79 xvi
Introduction This report, Trucks Involved in Fatal Accidents Factbook, 2005, provides descriptive statistics about medium and heavy trucks involved in fatal accidents. The data come from the Trucks Involved in Fatal Accidents (TIFA) survey program of the Center for National Truck and Bus Statistics (CNTBS) at the University of Michigan Transportation Research Institute (UMTRI). All records in the TIFA file are for trucks with a Gross Vehicle Weight Rating (GVWR) over 10,000 pounds. The TIFA file is produced annually from a survey of truck records extracted from the Fatality Analysis Reporting System (FARS) file, compiled by the National Center for Statistics and Analysis at the National Highway Traffic Safety Administration. Accident, vehicle, and driver records that appear to involve a medium or heavy truck are selected from the FARS file. Police reports for each accident represented are requested from the appropriate states. The 2005 TIFA file is a census file, meaning there is one record for each of the 5,343 medium and heavy trucks involved in a fatal accident that year. Trained and experienced interviewers contact individuals knowledgeable about the truck, including drivers, safety officers, police officers, emergency personnel, and witnesses. The interviewers verify that the vehicle is a truck and then collect information about the truck, truck driver, and the motor carrier that operated the truck. The interview produces a detailed description of the physical configuration of the truck, the operating authority of the truck, and the trip the truck was on at the time of the accident. Editors review each case to ensure accuracy and consistency. The TIFA file combines the detailed physical description of the vehicle from the TIFA survey with matching accident, driver, and vehicle data from the FARS file. Almost all variables in FARS describing the accident, vehicle, and driver are included in the TIFA file. No FARS data is altered or corrected. The TIFA variables supplement the FARS data with extensive detail on the truck, including cab style; axle counts for each unit in the truck configuration; cargo body and cargo type for each unit; truck operating authority; type of trip; hours driving; and the truck s role in the accident. The methodology, as well as a complete list of variables and data in the TIFA survey, is fully documented in Trucks Involved in Fatal Accidents Codebook, 2005. Report overview This report consists of six sections. The Trends section provides data on fatalities and fatal accident involvements from 2001 through 2005. The Accident conditions section provides information about the accidents the trucks were involved in, including distributions of truck fatal involvements across states, and information about the weather, road type, and roadway condition at the time of the accident. The Vehicle section includes information
Page 2 TIFA FACTBOOK, 2005 about truck configuration, cargo body type and cargo carried, and axle counts of the trucks. The Driver section includes information about truck driver injury, licensing, type of compensation, previous driving record, age, sex, and other driver characteristics. The Straight trucks section focuses on the characteristics of straight trucks, providing more detail about truck configuration, accident environment, and the truck s role in the accident. Finally, the Tractors section provides similar data on tractor combinations involved in fatal accidents Virtually all tables present counts of involvements; that is, counts of the trucks involved in a fatal accident by various factors and conditions of interest.
Trends, 2001-2005 This section contains tables displaying trends in truck involvements in fatal traffic accidents and in the number of persons killed in those accidents. The trends are presented by truck configuration, state, and person type. The truck configurations include straight trucks with no trailers, straight trucks pulling a single trailer, bobtails (tractors with no trailers), tractors with one semitrailer, tractors with two trailers (doubles), and all other truck configurations. The other combinations includes both straight truck and tractor configurations that do not fit into any of the previous categories. An average of about 5,200 trucks are involved in a fatal traffic accident each year. Tractors pulling one semitrailer are the most common truck configuration involved, accounting for about 60% of all trucks involved in a fatal accident. Texas, California, and Florida had the greatest number of truck involvements over the period 2001 to 2005. The number of persons killed in accidents involving a truck decreased slightly from 5,663 in 2004 to 5,623 in 2005. The number of truck drivers killed in traffic accidents increased from 664 in 2002 to 778 in 2005. An average of 368 pedestrians and 76 bicyclists are killed each year in traffic accidents involving trucks.
Page 4 TIFA FACTBOOK, 2005 Data from Trucks Involved in Fatal Accidents, 2001-2005
Trends, 2001-2005 Page 5 Annual fatal involvements Table 1-1 Fatal Truck Involvements by Year and Truck Configuration Strt Strt/1 Trac/1 Trac/2 Other Accident truck trailer Bobtail semi trlrs combs Unk. Total year No. No. No. No. No. No. No. No. 2001 1494 211 110 3014 166 41 105 5141 2002 1284 183 95 2877 154 36 321 4950 2003 1499 218 87 3005 157 38 100 5104 2004 1622 221 111 3160 156 33 10 5313 2005 1647 215 93 3159 185 32 12 5343 Total 7546 1048 496 15215 818 180 548 25851. Figure 1-1 Fatal Truck Involvements by Year and Truck Configuration 3500 Fatal Truck Involvements 3000 2500 2000 1500 1000 500 Trac/ 1semi Straight Strt/ 1 trailer Trac/ 2 trlrs Bobtail 0 2001 2002 2003 2004 2005 Year Data from Trucks Involved in Fatal Accidents, 2001-2005
Page 6 TIFA FACTBOOK, 2005 Table 1-2 Fatal Truck Involvements by Year and All Truck Configurations 2001 2002 2003 2004 2005 Total Configuration No. No. No. No. No. No. Straight only 1494 1284 1499 1622 1647 7546 Straight + full trailer 56 44 37 41 38 216 Straight + other 109 97 122 138 129 595 Straight + other, gooseneck hitch 46 42 59 42 48 237 Wrecker + tow 15 11 19 11 11 67 Straight, unknown if trailer 9 2 4 11 5 31 Straight + other trailer + other trailer 1 0 0 0 0 1 Straight + 2 full trailers 1 1 0 0 1 3 Straight + other (gooseneck) + other 1 0 0 1 0 2 Bobtail tractor 101 87 83 98 90 459 Tractor carrying cargo 9 8 4 13 3 37 Tractor and semitrailer 3014 2877 3005 3160 3159 15215 Tractor + other 13 12 8 5 11 49 Tractor + semi + A dolly 0 0 1 0 0 1 Tractor + full trailer 0 0 1 0 0 1 Double with A dolly 82 75 99 81 124 461 Double, B train 3 6 3 2 1 15 Double with C dolly 0 0 0 4 0 4 Double with unknown dolly type 6 1 2 7 6 22 Tractor + semi + full 70 72 51 58 53 304 Tractor + semi + other 3 0 0 1 0 4 Tractor + semi + unknown 2 0 2 3 1 8 Triple with A dollies 0 1 1 0 3 5 Tractor + 3 trailers 1 0 0 0 0 1 Tractor + jeep + semi + jeep 0 1 1 1 0 3 Tractor + semi + jeep 0 1 1 1 0 3 Tractor + jeep + semi 0 3 0 2 0 5 Tractor + 1 saddlemount tractor 0 2 0 0 0 2 Tractor + 2 saddlemount tractors 0 2 1 1 0 4 Tractor + 3 saddlemount tractors 0 0 0 0 1 1 Straight + 2 saddlemount straights 0 0 1 0 0 1 Unknown 105 321 100 10 12 548 Total 5141 4950 5104 5313 5343 25851. Data from Trucks Involved in Fatal Accidents, 2001-2005
Trends, 2001-2005 Page 7 Table 1-3: Fatal Truck Involvements by Year and State 2001 2002 2003 2004 2005 Total State No. No. No. No. No. No. Alabama 153 128 155 150 125 711 Alaska 9 5 5 15 4 38 Arizona 90 96 112 111 95 504 Arkansas 109 85 106 99 142 541 California 381 374 360 405 385 1905 Colorado 94 60 63 78 71 366 Connecticut 27 17 25 30 20 119 Delaware 12 19 17 19 8 75 Dist of Columbia 1 1 0 6 3 11 Florida 357 390 380 399 431 1957 Georgia 243 214 228 256 253 1194 Hawaii 9 4 5 7 5 30 Idaho 32 32 38 32 32 166 Illinois 188 172 192 163 203 918 Indiana 144 131 174 175 146 770 Iowa 80 76 66 64 71 357 Kansas 83 80 79 86 77 405 Kentucky 102 121 130 132 120 605 Louisiana 140 107 121 108 138 614 Maine 28 26 16 19 18 107 Maryland 79 66 69 82 66 362 Massachusetts 31 25 37 40 27 160 Michigan 130 136 121 126 115 628 Minnesota 62 86 68 69 62 347 Mississippi 93 78 81 90 92 434 Missouri 138 167 161 159 169 794 Montana 30 30 26 18 24 128 Nebraska 63 61 55 43 53 275 Nevada 44 39 42 33 53 211 New Hampshire 14 18 14 13 13 72 New Jersey 76 55 68 99 115 413 New Mexico 56 60 44 66 63 289 New York 144 143 156 141 147 731 North Carolina 196 177 175 194 213 955 North Dakota 12 18 15 17 12 74 Ohio 168 194 158 191 180 891 Oklahoma 92 126 126 120 128 592 Oregon 54 47 56 55 64 276 Pennsylvania 176 192 221 220 203 1012 Rhode Island 6 5 7 4 1 23 South Carolina 120 101 100 108 131 560 South Dakota 24 16 17 20 16 93 Tennessee 137 136 123 151 149 696 Texas 509 445 507 482 512 2455 Utah 34 40 23 29 32 158 Vermont 6 11 13 14 9 53 Virginia 128 90 132 110 125 585 Washington 58 57 42 55 60 272 West Virginia 52 59 55 63 50 279 Wisconsin 101 105 90 97 86 479 Wyoming 26 29 30 50 26 161 Total 5141 4950 5104 5313 5343 25851 Data from Trucks Involved in Fatal Accidents, 2001-2005
Page 8 TIFA FACTBOOK, 2005 Table 1-4: Fatal Truck Involvements by Year and State STRAIGHT TRUCKS ONLY 2001 2002 2003 2004 2005 Total State No. No. No. No. No. No. Alabama 39 31 36 51 40 197 Alaska 5 2 3 4 2 16 Arizona 31 30 36 44 32 173 Arkansas 25 15 25 18 34 117 California 139 122 147 152 147 707 Colorado 37 27 13 35 27 139 Connecticut 11 8 11 18 13 61 Delaware 6 7 6 9 5 33 Dist of Columbia 0 1 0 4 1 6 Florida 132 116 163 160 204 775 Georgia 82 68 76 92 81 399 Hawaii 7 2 3 5 3 20 Idaho 13 13 13 12 13 64 Illinois 27 41 47 50 49 214 Indiana 46 41 41 47 40 215 Iowa 20 17 21 18 17 93 Kansas 28 20 24 21 18 111 Kentucky 36 48 48 43 35 210 Louisiana 46 31 33 26 49 185 Maine 11 13 8 8 5 45 Maryland 38 30 34 41 34 177 Massachusetts 19 13 21 23 9 85 Michigan 52 59 48 49 49 257 Minnesota 18 32 25 26 22 123 Mississippi 20 7 6 15 23 71 Missouri 40 63 52 48 61 264 Montana 7 15 9 8 10 49 Nebraska 20 8 12 11 18 69 Nevada 11 6 12 10 13 52 New Hampshire 9 7 7 5 6 34 New Jersey 35 15 13 57 49 169 New Mexico 13 13 4 11 13 54 New York 73 49 80 78 80 360 North Carolina 68 61 63 73 83 348 North Dakota 3 4 5 8 6 26 Ohio 62 44 55 67 50 278 Oklahoma 26 21 46 42 41 176 Oregon 22 14 17 29 20 102 Pennsylvania 35 48 87 73 73 316 Rhode Island 5 2 2 2 1 12 South Carolina 39 31 33 38 44 185 South Dakota 5 3 6 8 4 26 Tennessee 43 43 37 42 49 214 Texas 177 87 164 146 153 727 Utah 4 4 8 10 13 39 Vermont 3 4 5 5 5 22 Virginia 49 33 48 43 52 225 Washington 16 31 21 20 27 115 West Virginia 19 21 23 17 17 97 Wisconsin 49 48 37 38 32 204 Wyoming 11 11 7 6 7 42 Total 1732 1480 1741 1866 1879 8698 Table includes all truck combinations where the power unit was a straight truck. Data from Trucks Involved in Fatal Accidents, 2001-2005
Trends, 2001-2005 Page 9 Table 1-5: Fatal Truck Involvements by Year and State TRACTOR-SEMITRAILERS ONLY 2001 2002 2003 2004 2005 Total State No. No. No. No. No. No. Alabama 101 88 110 94 82 475 Alaska 1 2 1 8 1 13 Arizona 55 61 67 59 61 303 Arkansas 76 66 75 76 102 395 California 184 182 156 194 183 899 Colorado 53 31 48 41 38 211 Connecticut 15 9 6 10 6 46 Delaware 6 11 11 9 3 40 Dist of Columbia 1 0 0 2 2 5 Florida 217 224 201 230 210 1082 Georgia 151 133 147 155 164 750 Hawaii 2 2 2 2 2 10 Idaho 14 16 21 17 15 83 Illinois 111 81 131 105 141 569 Indiana 94 82 129 113 101 519 Iowa 52 43 42 44 53 234 Kansas 52 57 49 61 49 268 Kentucky 64 69 79 84 80 376 Louisiana 92 69 86 74 82 403 Maine 17 13 8 10 12 60 Maryland 41 34 33 37 32 177 Massachusetts 11 10 14 16 17 68 Michigan 67 67 65 68 56 323 Minnesota 43 47 37 43 37 207 Mississippi 65 40 36 73 67 281 Missouri 91 95 104 104 98 492 Montana 17 11 11 8 12 59 Nebraska 40 46 43 31 32 192 Nevada 29 17 26 13 30 115 New Hampshire 4 11 7 6 7 35 New Jersey 35 12 22 42 62 173 New Mexico 41 44 28 48 45 206 New York 64 63 73 58 60 318 North Carolina 117 110 102 110 125 564 North Dakota 8 12 10 8 5 43 Ohio 94 128 98 117 127 564 Oklahoma 62 86 77 72 82 379 Oregon 28 26 29 22 37 142 Pennsylvania 94 105 123 141 114 577 Rhode Island 1 3 5 2 0 11 South Carolina 74 66 62 66 79 347 South Dakota 17 11 10 10 10 58 Tennessee 88 87 79 100 94 448 Texas 309 291 329 319 336 1584 Utah 22 30 11 18 15 96 Vermont 3 7 8 9 4 31 Virginia 74 56 80 63 68 341 Washington 24 19 16 28 25 112 West Virginia 29 33 30 46 31 169 Wisconsin 50 55 48 57 52 262 Wyoming 14 16 20 37 13 100 Total 3014 2877 3005 3160 3159 15215 Data from Trucks Involved in Fatal Accidents, 2001-2005
Page 10 TIFA FACTBOOK, 2005 Table 1-6: Fatal Truck Involvements by Year and State DOUBLES ONLY 2001 2002 2003 2004 2005 Total State No. No. No. No. No. No. Alabama 3 3 5 2 1 14 Alaska 2 0 1 2 1 6 Arizona 4 3 8 4 1 20 Arkansas 4 3 3 2 3 15 California 42 59 43 45 49 238 Colorado 4 1 1 0 3 9 Connecticut 0 0 1 0 1 2 Delaware 0 0 0 0 0 0 Dist of Columbia 0 0 0 0 0 0 Florida 4 2 4 1 6 17 Georgia 3 3 3 2 5 16 Hawaii 0 0 0 0 0 0 Idaho 4 2 2 2 3 13 Illinois 1 1 2 4 8 16 Indiana 2 4 3 9 3 21 Iowa 3 1 0 0 1 5 Kansas 2 0 3 3 5 13 Kentucky 1 1 1 2 2 7 Louisiana 1 4 1 2 1 9 Maine 0 0 0 0 0 0 Maryland 0 0 0 1 0 1 Massachusetts 1 0 0 1 0 2 Michigan 8 7 7 8 8 38 Minnesota 0 0 2 0 1 3 Mississippi 2 0 2 0 1 5 Missouri 5 6 3 2 3 19 Montana 4 2 4 1 2 13 Nebraska 2 3 0 0 1 6 Nevada 3 2 3 9 9 26 New Hampshire 0 0 0 0 0 0 New Jersey 2 1 1 0 2 6 New Mexico 2 2 2 5 3 14 New York 0 3 1 2 4 10 North Carolina 4 1 8 6 1 20 North Dakota 1 0 0 1 1 3 Ohio 6 4 4 5 2 21 Oklahoma 2 1 1 1 2 7 Oregon 3 5 5 3 4 20 Pennsylvania 2 3 6 3 9 23 Rhode Island 0 0 0 0 0 0 South Carolina 3 0 0 1 0 4 South Dakota 1 1 1 2 1 6 Tennessee 2 4 4 4 3 17 Texas 10 7 9 7 15 48 Utah 4 4 4 1 3 16 Vermont 0 0 0 0 0 0 Virginia 2 1 1 1 2 7 Washington 13 5 2 5 7 32 West Virginia 2 2 1 0 1 6 Wisconsin 1 1 2 1 2 7 Wyoming 1 2 3 6 5 17 Total 166 154 157 156 185 818 Data from Trucks Involved in Fatal Accidents, 2001-2005
Trends, 2001-2005 Page 11 Annual fatalities Table 1-7 Fatalities in Truck Involvements by Year and Person Type 2001 2002 2003 2004 2005 Vehicle/Person type No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. Truck Driver 676 12.4 664 12.5 700 12.9 700 12.4 778 13.8 Passenger 145 2.7 124 2.3 123 2.3 156 2.8 147 2.6 Unk occ type 0 0.0 1 0.0 2 0.0 2 0.0 0 0.0 Truck total 821 15.1 789 14.8 825 15.3 858 15.2 925 16.5 Other vehicle Drivers 3081 56.6 3026 56.9 3029 56.0 3138 55.4 3120 55.5 Passengers 1053 19.3 1087 20.5 1110 20.5 1198 21.2 1065 18.9 Unk occ type 8 0.1 4 0.1 10 0.2 3 0.1 2 0.0 Other vehicle total 4142 76.1 4117 77.5 4149 76.7 4339 76.6 4187 74.5 Non-motorists In parked vehicle 14 0.3 12 0.2 9 0.2 7 0.1 25 0.4 Pedestrian 392 7.2 325 6.1 364 6.7 366 6.5 392 7.0 Bicyclist 73 1.3 69 1.3 59 1.1 87 1.5 94 1.7 Other/unknown 0 0.0 2 0.0 3 0.1 6 0.1 0 0.0 Non-motorist total 479 8.8 408 7.7 435 8.0 466 8.2 511 9.1 Total 5442 100.0 5314 100.0 5409 100.0 5663 100.0 5623 100.0 Figure 1-2 Fatalities in Truck Involvements by Year and Person Type Fatalities in Truck Involvements 3500 3000 2500 2000 1500 1000 500 0 Oth veh-driver Oth veh-pass Truck driver Pedestrian Bicyclist 2001 2002 2003 Year 2004 2005 Data from Trucks Involved in Fatal Accidents, 2001-2005
Page 12 TIFA FACTBOOK, 2005 Data from Trucks Involved in Fatal Accidents, 2001-2005
Accident conditions This section provides statistics that describe conditions at the scene of fatal traffic accidents involving trucks. Tables present various accident characteristics, including the geographic distribution of truck involvements, temporal and environmental conditions, as well as distributions of collision type and the truck s role in the accident. Though the tables focus on accident-level characteristics, all tables show counts of trucks involved in fatal accidents, rather than counts of accidents. Some fatal traffic accidents include more than one truck. October had the greatest number of fatal involvements with 528, while February had the fewest with 355. Almost two-thirds of fatal accident involvements occur in rural areas, and in daylight. 82.7% of fatal accident involvements occur on dry roads. 86.0% of fatal accident involvements occur in normal (i.e., no precipitation) weather conditions. 28.6% of fatal involvements occur on state highways, 23.0% on U.S. highways, and 26.4% on Interstate highways. In 11.6% of fatal involvements, the other vehicle crossed the center line of the road and struck the truck head on.
Page 14 TIFA FACTBOOK, 2005
Accident conditions Page 15 Geographic distributions No. of Involvements 1 to 9 12 to 32 50 to 95 115 to 149 169 to 253 385 to 512 Figure 2-1: Fatal Truck Involvements by State No. of Involvements 1 to 5 6 to 13 17 to 23 27 to 44 49 to 83 147 to 204 Figure 2-2: Fatal Truck Involvements by State STRAIGHT TRUCKS ONLY
Page 16 TIFA FACTBOOK, 2005 No. of Involvements 0 to 7 10 to 17 25 to 68 79 to 102 114 to 164 183 to 336 Figure 2-3: Fatal Truck Involvements by State TRACTOR-SEMITRAILERS ONLY No. of Involvements 0 1 to 2 3 to 5 6 to 15 49 Figure 2-4: Fatal Truck Involvements by State DOUBLES ONLY
Accident conditions Page 17 Table 2-1: Fatal Truck Involvements by State and Truck Configuration Strt Truck Strt/1trailer Bobtail Trac/1 semi Trac/2 trlrs Oth combs Unknown Total State No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. Alabama 33 2.0 6 2.8 0 0.0 82 2.6 1 0.5 3 9.4 0 0.0 125 2.3 Alaska 1 0.1 1 0.5 0 0.0 1 0.0 1 0.5 0 0.0 0 0.0 4 0.1 Arizona 27 1.6 5 2.3 1 1.1 61 1.9 1 0.5 0 0.0 0 0.0 95 1.8 Arkansas 30 1.8 4 1.9 3 3.2 102 3.2 3 1.6 0 0.0 0 0.0 142 2.7 California 119 7.2 24 11.2 6 6.5 183 5.8 49 26.5 4 12.5 0 0.0 385 7.2 Colorado 23 1.4 4 1.9 3 3.2 38 1.2 3 1.6 0 0.0 0 0.0 71 1.3 Connecticut 13 0.8 0 0.0 0 0.0 6 0.2 1 0.5 0 0.0 0 0.0 20 0.4 Delaware 5 0.3 0 0.0 0 0.0 3 0.1 0 0.0 0 0.0 0 0.0 8 0.1 Dist of Columbia 1 0.1 0 0.0 0 0.0 2 0.1 0 0.0 0 0.0 0 0.0 3 0.1 Florida 189 11.5 14 6.5 8 8.6 210 6.6 6 3.2 1 3.1 3 25.0 431 8.1 Georgia 77 4.7 4 1.9 1 1.1 164 5.2 5 2.7 1 3.1 1 8.3 253 4.7 Hawaii 3 0.2 0 0.0 0 0.0 2 0.1 0 0.0 0 0.0 0 0.0 5 0.1 Idaho 12 0.7 1 0.5 0 0.0 15 0.5 3 1.6 1 3.1 0 0.0 32 0.6 Illinois 44 2.7 5 2.3 4 4.3 141 4.5 8 4.3 0 0.0 1 8.3 203 3.8 Indiana 36 2.2 4 1.9 2 2.2 101 3.2 3 1.6 0 0.0 0 0.0 146 2.7 Iowa 13 0.8 4 1.9 0 0.0 53 1.7 1 0.5 0 0.0 0 0.0 71 1.3 Kansas 16 1.0 2 0.9 2 2.2 49 1.6 5 2.7 2 6.3 1 8.3 77 1.4 Kentucky 34 2.1 1 0.5 2 2.2 80 2.5 2 1.1 0 0.0 1 8.3 120 2.2 Louisiana 44 2.7 5 2.3 5 5.4 82 2.6 1 0.5 1 3.1 0 0.0 138 2.6 Maine 4 0.2 1 0.5 1 1.1 12 0.4 0 0.0 0 0.0 0 0.0 18 0.3 Maryland 32 1.9 2 0.9 0 0.0 32 1.0 0 0.0 0 0.0 0 0.0 66 1.2 Massachusetts 9 0.5 0 0.0 1 1.1 17 0.5 0 0.0 0 0.0 0 0.0 27 0.5 Michigan 42 2.6 7 3.3 2 2.2 56 1.8 8 4.3 0 0.0 0 0.0 115 2.2 Minnesota 19 1.2 3 1.4 2 2.2 37 1.2 1 0.5 0 0.0 0 0.0 62 1.2 Mississippi 19 1.2 3 1.4 1 1.1 67 2.1 1 0.5 1 3.1 0 0.0 92 1.7 Missouri 51 3.1 10 4.7 7 7.5 98 3.1 3 1.6 0 0.0 0 0.0 169 3.2 Montana 7 0.4 3 1.4 0 0.0 12 0.4 2 1.1 0 0.0 0 0.0 24 0.4 Nebraska 13 0.8 5 2.3 2 2.2 32 1.0 1 0.5 0 0.0 0 0.0 53 1.0 Nevada 10 0.6 3 1.4 0 0.0 30 0.9 9 4.9 1 3.1 0 0.0 53 1.0 New Hampshire 6 0.4 0 0.0 0 0.0 7 0.2 0 0.0 0 0.0 0 0.0 13 0.2 New Jersey 46 2.8 3 1.4 2 2.2 62 2.0 2 1.1 0 0.0 0 0.0 115 2.2 New Mexico 7 0.4 6 2.8 0 0.0 45 1.4 3 1.6 0 0.0 2 16.7 63 1.2 New York 76 4.6 4 1.9 2 2.2 60 1.9 4 2.2 0 0.0 1 8.3 147 2.8 North Carolina 70 4.3 13 6.0 4 4.3 125 4.0 1 0.5 0 0.0 0 0.0 213 4.0 North Dakota 2 0.1 4 1.9 0 0.0 5 0.2 1 0.5 0 0.0 0 0.0 12 0.2 Ohio 46 2.8 3 1.4 1 1.1 127 4.0 2 1.1 1 3.1 0 0.0 180 3.4 Oklahoma 33 2.0 8 3.7 3 3.2 82 2.6 2 1.1 0 0.0 0 0.0 128 2.4 Oregon 17 1.0 3 1.4 1 1.1 37 1.2 4 2.2 2 6.3 0 0.0 64 1.2 Pennsylvania 69 4.2 3 1.4 6 6.5 114 3.6 9 4.9 2 6.3 0 0.0 203 3.8 Rhode Island 1 0.1 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 1 0.0 South Carolina 39 2.4 5 2.3 7 7.5 79 2.5 0 0.0 0 0.0 1 8.3 131 2.5 South Dakota 2 0.1 2 0.9 1 1.1 10 0.3 1 0.5 0 0.0 0 0.0 16 0.3 Tennessee 46 2.8 2 0.9 3 3.2 94 3.0 3 1.6 1 3.1 0 0.0 149 2.8 Texas 127 7.7 22 10.2 6 6.5 336 10.6 15 8.1 6 18.8 0 0.0 512 9.6 Utah 9 0.5 4 1.9 0 0.0 15 0.5 3 1.6 1 3.1 0 0.0 32 0.6 Vermont 4 0.2 1 0.5 0 0.0 4 0.1 0 0.0 0 0.0 0 0.0 9 0.2 Virginia 49 3.0 2 0.9 2 2.2 68 2.2 2 1.1 2 6.3 0 0.0 125 2.3 Washington 21 1.3 4 1.9 1 1.1 25 0.8 7 3.8 2 6.3 0 0.0 60 1.1 West Virginia 17 1.0 0 0.0 0 0.0 31 1.0 1 0.5 0 0.0 1 8.3 50 0.9 Wisconsin 30 1.8 2 0.9 0 0.0 52 1.6 2 1.1 0 0.0 0 0.0 86 1.6 Wyoming 4 0.2 3 1.4 1 1.1 13 0.4 5 2.7 0 0.0 0 0.0 26 0.5 Total 1647 100.0 215 100.0 93 100.0 3159 100.0 185 100.0 32 100.0 12 100.0 5343 100.0
Page 18 TIFA FACTBOOK, 2005 Temporal distributions Table 2-2 Fatal Truck Involvements by Month and Truck Configuration Month of Strt truck Strt/1 trailer Bobtail Trac/1 semi Trac/2 trlrs Oth combs Unknown Total accident No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. January 103 6.3 10 4.7 3 3.2 251 7.9 17 9.2 2 6.3 1 8.3 387 7.2 February 90 5.5 13 6.0 14 15.1 225 7.1 12 6.5 1 3.1 0 0.0 355 6.6 March 118 7.2 20 9.3 11 11.8 254 8.0 25 13.5 0 0.0 1 8.3 429 8.0 April 130 7.9 15 7.0 10 10.8 259 8.2 13 7.0 2 6.3 0 0.0 429 8.0 May 140 8.5 21 9.8 5 5.4 240 7.6 13 7.0 6 18.8 2 16.7 427 8.0 June 170 10.3 21 9.8 6 6.5 284 9.0 12 6.5 4 12.5 2 16.7 499 9.3 July 150 9.1 22 10.2 9 9.7 261 8.3 9 4.9 2 6.3 2 16.7 455 8.5 August 170 10.3 14 6.5 3 3.2 295 9.3 23 12.4 2 6.3 1 8.3 508 9.5 September 169 10.3 20 9.3 7 7.5 249 7.9 17 9.2 5 15.6 0 0.0 467 8.7 October 161 9.8 24 11.2 9 9.7 311 9.8 18 9.7 3 9.4 2 16.7 528 9.9 November 123 7.5 22 10.2 9 9.7 269 8.5 11 5.9 1 3.1 1 8.3 436 8.2 December 123 7.5 13 6.0 7 7.5 261 8.3 15 8.1 4 12.5 0 0.0 423 7.9 Total 1647 100.0 215 100.0 93 100.0 3159 100.0 185 100.0 32 100.0 12 100.0 5343 100.0 Table 2-3 Fatal Truck Involvements by Day of Week and Truck Configuration Strt truck Strt/1 trailer Bobtail Trac/1 semi Trac/2 trlrs Oth combs Unknown Total Day of week No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. Sunday 65 3.9 9 4.2 7 7.5 192 6.1 7 3.8 6 18.8 1 8.3 287 5.4 Monday 281 17.1 31 14.4 17 18.3 498 15.8 22 11.9 5 15.6 4 33.3 858 16.1 Tuesday 288 17.5 36 16.7 16 17.2 555 17.6 30 16.2 3 9.4 2 16.7 930 17.4 Wednesday 280 17.0 43 20.0 17 18.3 567 17.9 38 20.5 6 18.8 1 8.3 952 17.8 Thursday 294 17.9 35 16.3 8 8.6 529 16.7 36 19.5 3 9.4 1 8.3 906 17.0 Friday 287 17.4 36 16.7 21 22.6 529 16.7 35 18.9 4 12.5 1 8.3 913 17.1 Saturday 152 9.2 25 11.6 7 7.5 289 9.1 17 9.2 5 15.6 2 16.7 497 9.3 Total 1647 100.0 215 100.0 93 100.0 3159 100.0 185 100.0 32 100.0 12 100.0 5343 100.0 Table 2-4 Fatal Truck Involvements by Day Type and Truck Configuration Strt truck Strt/1 trailer Bobtail Trac/1 semi Trac/2 trlrs Oth combs Unknown Total Day type No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. Work week 1430 86.8 181 84.2 79 84.9 2678 84.8 161 87.0 21 65.6 9 75.0 4559 85.3 Weekend 217 13.2 34 15.8 14 15.1 481 15.2 24 13.0 11 34.4 3 25.0 784 14.7 Total 1647 100.0 215 100.0 93 100.0 3159 100.0 185 100.0 32 100.0 12 100.0 5343 100.0 Note: Work week is defined as Monday through Friday, and weekend as Saturday and Sunday.
Accident conditions Page 19 Table 2-5 Fatal Truck Involvements by Time of Accident and Truck Configuration Time of Strt truck Strt/1 trailer Bobtail Trac/1 semi Trac/2 trlrs Oth combs Unknown Total accident No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. Midnight 20 1.2 6 2.8 2 2.2 88 2.8 8 4.3 0 0.0 0 0.0 124 2.3 1:00 AM 28 1.7 3 1.4 4 4.3 101 3.2 9 4.9 1 3.1 0 0.0 146 2.7 2:00 AM 25 1.5 3 1.4 3 3.2 94 3.0 7 3.8 1 3.1 0 0.0 133 2.5 3:00 AM 17 1.0 1 0.5 3 3.2 95 3.0 5 2.7 0 0.0 2 16.7 123 2.3 4:00 AM 29 1.8 1 0.5 2 2.2 93 2.9 14 7.6 0 0.0 0 0.0 139 2.6 5:00 AM 53 3.2 5 2.3 5 5.4 139 4.4 21 11.4 1 3.1 0 0.0 224 4.2 6:00 AM 83 5.0 7 3.3 6 6.5 170 5.4 9 4.9 0 0.0 1 8.3 276 5.2 7:00 AM 95 5.8 16 7.4 4 4.3 179 5.7 8 4.3 2 6.3 0 0.0 304 5.7 8:00 AM 98 6.0 9 4.2 6 6.5 132 4.2 10 5.4 2 6.3 0 0.0 257 4.8 9:00 AM 135 8.2 12 5.6 6 6.5 155 4.9 5 2.7 2 6.3 1 8.3 316 5.9 10:00 AM 112 6.8 15 7.0 1 1.1 172 5.4 2 1.1 2 6.3 1 8.3 305 5.7 11:00 AM 129 7.8 10 4.7 4 4.3 150 4.7 2 1.1 2 6.3 0 0.0 297 5.6 Noon 123 7.5 15 7.0 5 5.4 172 5.4 5 2.7 1 3.1 0 0.0 321 6.0 1:00 PM 112 6.8 14 6.5 4 4.3 173 5.5 8 4.3 1 3.1 1 8.3 313 5.9 2:00 PM 122 7.4 17 7.9 4 4.3 207 6.6 10 5.4 3 9.4 0 0.0 363 6.8 3:00 PM 117 7.1 21 9.8 9 9.7 202 6.4 8 4.3 5 15.6 0 0.0 362 6.8 4:00 PM 83 5.0 18 8.4 3 3.2 124 3.9 2 1.1 4 12.5 2 16.7 236 4.4 5:00 PM 89 5.4 18 8.4 4 4.3 134 4.2 9 4.9 1 3.1 2 16.7 257 4.8 6:00 PM 41 2.5 8 3.7 2 2.2 100 3.2 8 4.3 1 3.1 0 0.0 160 3.0 7:00 PM 31 1.9 6 2.8 6 6.5 99 3.1 3 1.6 0 0.0 0 0.0 145 2.7 8:00 PM 22 1.3 1 0.5 1 1.1 90 2.8 9 4.9 3 9.4 1 8.3 127 2.4 9:00 PM 29 1.8 3 1.4 2 2.2 93 2.9 8 4.3 0 0.0 0 0.0 135 2.5 10:00 PM 21 1.3 1 0.5 3 3.2 105 3.3 9 4.9 0 0.0 0 0.0 139 2.6 11:00 PM 30 1.8 5 2.3 4 4.3 90 2.8 6 3.2 0 0.0 1 8.3 136 2.5 12:00 midnight 0 0.0 0 0.0 0 0.0 1 0.0 0 0.0 0 0.0 0 0.0 1 0.0 Unknown 3 0.2 0 0.0 0 0.0 1 0.0 0 0.0 0 0.0 0 0.0 4 0.1 Total 1647 100.0 215 100.0 93 100.0 3159 100.0 185 100.0 32 100.0 12 100.0 5343 100.0
Page 20 TIFA FACTBOOK, 2005 Table 2-6 Fatal Truck Involvements by Time of Accident and Day Type Time of Work week Weekend Total accident No. Pct. No. Pct. No. Pct. Midnight 86 1.9 38 4.8 124 2.3 1:00 AM 104 2.3 42 5.4 146 2.7 2:00 AM 96 2.1 37 4.7 133 2.5 3:00 AM 87 1.9 36 4.6 123 2.3 4:00 AM 106 2.3 33 4.2 139 2.6 5:00 AM 192 4.2 32 4.1 224 4.2 6:00 AM 229 5.0 47 6.0 276 5.2 7:00 AM 275 6.0 29 3.7 304 5.7 8:00 AM 223 4.9 34 4.3 257 4.8 9:00 AM 284 6.2 32 4.1 316 5.9 10:00 AM 279 6.1 26 3.3 305 5.7 11:00 AM 262 5.7 35 4.5 297 5.6 Noon 284 6.2 37 4.7 321 6.0 1:00 PM 281 6.2 32 4.1 313 5.9 2:00 PM 331 7.3 32 4.1 363 6.8 3:00 PM 319 7.0 43 5.5 362 6.8 4:00 PM 208 4.6 28 3.6 236 4.4 5:00 PM 217 4.8 40 5.1 257 4.8 6:00 PM 134 2.9 26 3.3 160 3.0 7:00 PM 113 2.5 32 4.1 145 2.7 8:00 PM 98 2.1 29 3.7 127 2.4 9:00 PM 116 2.5 19 2.4 135 2.5 10:00 PM 118 2.6 21 2.7 139 2.6 11:00 PM 112 2.5 24 3.1 136 2.5 12:00 midnight 1 0.0 0 0.0 1 0.0 Unknown 4 0.1 0 0.0 4 0.1 Total 4559 100.0 784 100.0 5343 100.0 Note: Work week is defined as Monday through Friday, and weekend as Saturday and Sunday. Environmental distributions Table 2-7 Fatal Truck Involvements by Land Use and Truck Configuration Strt truck Strt/1 trailer Bobtail Trac/1 semi Trac/2 trlrs Oth combs Unknown Total Land use No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. Urban 696 42.3 61 28.4 42 45.2 999 31.6 63 34.1 12 37.5 3 25.0 1876 35.1 Rural 887 53.9 150 69.8 47 50.5 2062 65.3 120 64.9 19 59.4 9 75.0 3294 61.7 Unknown 64 3.9 4 1.9 4 4.3 98 3.1 2 1.1 1 3.1 0 0.0 173 3.2 Total 1647 100.0 215 100.0 93 100.0 3159 100.0 185 100.0 32 100.0 12 100.0 5343 100.0
Accident conditions Page 21 Table 2-8 Fatal Truck Involvements by Light Condition and Truck Configuration Strt truck Strt/1 trailer Bobtail Trac/1 semi Trac/2 trlrs Oth combs Unknown Total Light condition No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. Daylight 1261 76.6 171 79.5 54 58.1 1879 59.5 75 40.5 25 78.1 7 58.3 3472 65.0 Dark 231 14.0 25 11.6 30 32.3 865 27.4 73 39.5 4 12.5 4 33.3 1232 23.1 Dark but lighted 102 6.2 11 5.1 5 5.4 258 8.2 26 14.1 1 3.1 1 8.3 404 7.6 Dawn 36 2.2 2 0.9 3 3.2 109 3.5 6 3.2 0 0.0 0 0.0 156 2.9 Dusk 14 0.9 6 2.8 1 1.1 43 1.4 5 2.7 2 6.3 0 0.0 71 1.3 Unknown 3 0.2 0 0.0 0 0.0 5 0.2 0 0.0 0 0.0 0 0.0 8 0.1 Total 1647 100.0 215 100.0 93 100.0 3159 100.0 185 100.0 32 100.0 12 100.0 5343 100.0 Table 2-9 Fatal Truck Involvements by Roadway Surface Condition and Truck Configuration Roadway surface Strt truck Strt/1trailer Bobtail Trac/1 semi Trac/2 trlrs Oth combs Unknown Total condition No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. Dry 1390 84.4 198 92.1 78 83.9 2562 81.1 152 82.2 29 90.6 9 75.0 4418 82.7 Wet 210 12.8 13 6.0 9 9.7 465 14.7 22 11.9 3 9.4 3 25.0 725 13.6 Snow or slush 26 1.6 1 0.5 3 3.2 63 2.0 2 1.1 0 0.0 0 0.0 95 1.8 Ice 14 0.9 3 1.4 3 3.2 63 2.0 9 4.9 0 0.0 0 0.0 92 1.7 Sand, dirt, oil 3 0.2 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 3 0.1 Other 2 0.1 0 0.0 0 0.0 3 0.1 0 0.0 0 0.0 0 0.0 5 0.1 Unknown 2 0.1 0 0.0 0 0.0 3 0.1 0 0.0 0 0.0 0 0.0 5 0.1 Total 1647 100.0 215 100.0 93 100.0 3159 100.0 185 100.0 32 100.0 12 100.0 5343 100.0 Table 2-10 Fatal Truck Involvements by Weather Condition and Truck Configuration Weather Strt truck Strt/1trailer Bobtail Trac/1 semi Trac/2 trlrs Oth combs Unknown Total condition No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. Normal 1471 89.3 202 94.0 81 87.1 2645 83.7 158 85.4 28 87.5 10 83.3 4595 86.0 Rain 112 6.8 7 3.3 5 5.4 302 9.6 11 5.9 2 6.3 2 16.7 441 8.3 Sleet 4 0.2 0 0.0 0 0.0 17 0.5 1 0.5 0 0.0 0 0.0 22 0.4 Snow 32 1.9 4 1.9 6 6.5 89 2.8 6 3.2 0 0.0 0 0.0 137 2.6 Fog 20 1.2 2 0.9 1 1.1 70 2.2 6 3.2 1 3.1 0 0.0 100 1.9 Rain & fog 0 0.0 0 0.0 0 0.0 1 0.0 0 0.0 0 0.0 0 0.0 1 0.0 Other 5 0.3 0 0.0 0 0.0 32 1.0 3 1.6 1 3.1 0 0.0 41 0.8 Unknown 3 0.2 0 0.0 0 0.0 3 0.1 0 0.0 0 0.0 0 0.0 6 0.1 Total 1647 100.0 215 100.0 93 100.0 3159 100.0 185 100.0 32 100.0 12 100.0 5343 100.0
Page 22 TIFA FACTBOOK, 2005 Roadway distributions Table 2-11 Fatal Truck Involvements by Roadway Function Class and Truck Configuration Strt truck Strt/1trailer Bobtail Trac/1 semi Trac/2 trlrs Oth combs Unknown Total Road function class No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. Urban Interstate 114 6.9 13 6.0 7 7.5 416 13.2 26 14.1 4 12.5 2 16.7 582 10.9 Freeway/expressway 77 4.7 5 2.3 9 9.7 131 4.1 3 1.6 0 0.0 0 0.0 225 4.2 Other principal artery 233 14.1 21 9.8 8 8.6 246 7.8 16 8.6 4 12.5 0 0.0 528 9.9 Minor artery 140 8.5 11 5.1 12 12.9 122 3.9 11 5.9 3 9.4 0 0.0 299 5.6 Collector 40 2.4 5 2.3 1 1.1 29 0.9 3 1.6 0 0.0 0 0.0 78 1.5 Local street 89 5.4 6 2.8 5 5.4 51 1.6 3 1.6 1 3.1 1 8.3 156 2.9 Unknown urban 3 0.2 0 0.0 0 0.0 4 0.1 1 0.5 0 0.0 0 0.0 8 0.1 Total urban 696 42.3 61 28.4 42 45.2 999 31.6 63 34.1 12 37.5 3 25.0 1876 35.1 Rural Interstate 81 4.9 33 15.3 6 6.5 667 21.1 57 30.8 4 12.5 6 50.0 854 16.0 Other principal artery 201 12.2 38 17.7 16 17.2 648 20.5 36 19.5 8 25.0 2 16.7 949 17.8 Minor artery 223 13.5 33 15.3 9 9.7 386 12.2 18 9.7 2 6.3 0 0.0 671 12.6 Major collector 216 13.1 27 12.6 8 8.6 244 7.7 4 2.2 4 12.5 1 8.3 504 9.4 Minor collector 40 2.4 4 1.9 0 0.0 38 1.2 5 2.7 0 0.0 0 0.0 87 1.6 Local road 125 7.6 14 6.5 7 7.5 75 2.4 0 0.0 1 3.1 0 0.0 222 4.2 Unknown rural 1 0.1 1 0.5 1 1.1 4 0.1 0 0.0 0 0.0 0 0.0 7 0.1 Total rural 887 53.9 150 69.8 47 50.5 2062 65.3 120 64.9 19 59.4 9 75.0 3294 61.7 Unknown 64 3.9 4 1.9 4 4.3 98 3.1 2 1.1 1 3.1 0 0.0 173 3.2 Total urban and rural 1647 100.0 215 100.0 93 100.0 3159 100.0 185 100.0 32 100.0 12 100.0 5343 100.0 Table 2-12 Fatal Truck Involvements by Route Signing and Truck Configuration Strt truck Strt/1trailer Bobtail Trac/1 semi Trac/2 trlrs Oth combs Unknown Total Route signing No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. Interstate 190 11.5 46 21.4 13 14.0 1065 33.7 82 44.3 7 21.9 8 66.7 1411 26.4 US highway 316 19.2 46 21.4 22 23.7 808 25.6 26 14.1 9 28.1 2 16.7 1229 23.0 State highway 557 33.8 56 26.0 29 31.2 831 26.3 43 23.2 10 31.3 1 8.3 1527 28.6 County road 279 16.9 21 9.8 15 16.1 163 5.2 15 8.1 3 9.4 0 0.0 496 9.3 Township 48 2.9 7 3.3 3 3.2 26 0.8 0 0.0 0 0.0 0 0.0 84 1.6 Municipality 158 9.6 24 11.2 7 7.5 126 4.0 17 9.2 1 3.1 1 8.3 334 6.3 Frontage road 7 0.4 1 0.5 0 0.0 14 0.4 1 0.5 1 3.1 0 0.0 24 0.4 Other 50 3.0 11 5.1 2 2.2 61 1.9 1 0.5 1 3.1 0 0.0 126 2.4 Unknown 42 2.6 3 1.4 2 2.2 65 2.1 0 0.0 0 0.0 0 0.0 112 2.1 Total 1647 100.0 215 100.0 93 100.0 3159 100.0 185 100.0 32 100.0 12 100.0 5343 100.0
Accident conditions Page 23 Table 2-13 Fatal Truck Involvements by Relation to Junction and Truck Configuration Strt truck Strt/1trailer Bobtail Trac/1 semi Trac/2 trlrs Oth combs Unknown Total Relation to junction No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. Noninterchange Nonjunction 994 60.4 139 64.7 63 67.7 2194 69.5 138 74.6 25 78.1 10 83.3 3563 66.7 Intersection 449 27.3 44 20.5 17 18.3 568 18.0 27 14.6 5 15.6 1 8.3 1111 20.8 Intersection related 78 4.7 8 3.7 5 5.4 91 2.9 7 3.8 0 0.0 0 0.0 189 3.5 Driveway, alley, etc. 29 1.8 3 1.4 2 2.2 49 1.6 0 0.0 1 3.1 1 8.3 85 1.6 Entrance/exit ramp 5 0.3 0 0.0 0 0.0 14 0.4 1 0.5 0 0.0 0 0.0 20 0.4 Rail grade crossing 14 0.9 2 0.9 1 1.1 11 0.3 0 0.0 0 0.0 0 0.0 28 0.5 In crossover 4 0.2 1 0.5 0 0.0 16 0.5 0 0.0 0 0.0 0 0.0 21 0.4 Driveway access related 27 1.6 9 4.2 0 0.0 54 1.7 2 1.1 1 3.1 0 0.0 93 1.7 Unknown 2 0.1 0 0.0 0 0.0 1 0.0 0 0.0 0 0.0 0 0.0 3 0.1 Interchange area Intersection 9 0.5 2 0.9 2 2.2 40 1.3 0 0.0 0 0.0 0 0.0 53 1.0 Intersection related 6 0.4 0 0.0 0 0.0 10 0.3 1 0.5 0 0.0 0 0.0 17 0.3 Driveway access 3 0.2 0 0.0 0 0.0 1 0.0 0 0.0 0 0.0 0 0.0 4 0.1 Entrance/exit ramp 12 0.7 3 1.4 2 2.2 31 1.0 3 1.6 0 0.0 0 0.0 51 1.0 Crossover-related 0 0.0 0 0.0 0 0.0 2 0.1 0 0.0 0 0.0 0 0.0 2 0.0 Other location 15 0.9 3 1.4 1 1.1 72 2.3 6 3.2 0 0.0 0 0.0 97 1.8 Unknown 0 0.0 1 0.5 0 0.0 3 0.1 0 0.0 0 0.0 0 0.0 4 0.1 Unknown 0 0.0 0 0.0 0 0.0 2 0.1 0 0.0 0 0.0 0 0.0 2 0.0 Total 1647 100.0 215 100.0 93 100.0 3159 100.0 185 100.0 32 100.0 12 100.0 5343 100.0 Table 2-14 Fatal Truck Involvements by Number of Travel Lanes and Truck Configuration Number of Strt truck Strt/1trailer Bobtail Trac/1 semi Trac/2 trlrs Oth combs Unknown Total travel lanes No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. No. Pct. 1 15 0.9 1 0.5 1 1.1 40 1.3 4 2.2 0 0.0 0 0.0 61 1.1 2 1225 74.4 161 74.9 73 78.5 2190 69.3 131 70.8 24 75.0 10 83.3 3814 71.4 3 127 7.7 16 7.4 6 6.5 322 10.2 21 11.4 1 3.1 1 8.3 494 9.2 4 214 13.0 26 12.1 11 11.8 461 14.6 23 12.4 5 15.6 1 8.3 741 13.9 5 27 1.6 3 1.4 0 0.0 35 1.1 2 1.1 1 3.1 0 0.0 68 1.3 6 22 1.3 3 1.4 1 1.1 63 2.0 1 0.5 0 0.0 0 0.0 90 1.7 7 or more 6 0.4 1 0.5 0 0.0 18 0.6 2 1.1 0 0.0 0 0.0 27 0.5 Unknown 11 0.7 4 1.9 1 1.1 30 0.9 1 0.5 1 3.1 0 0.0 48 0.9 Total 1647 100.0 215 100.0 93 100.0 3159 100.0 185 100.0 32 100.0 12 100.0 5343 100.0